URL
https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk
Subversion Repositories openrisc_me
[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [gcc/] [scan-types.sh] - Rev 247
Go to most recent revision | Compare with Previous | Blame | View Log
#! /bin/sh # Deduce values of standard ANSI and POSIX types (e.g. size_t, pid_t). # Emits macros definitions for these, and some other types. # Intended to be used to massage the sys-protos.h file. # Expects one arg, which is the GCC source directory. CC=${CC-"./xgcc -B$1/"} CPP=${CPP-`echo ${CC} -E -I"$1/"`} SED=sed # Generate definitions for the standard types (such as mode_t) # compatible with those in the standard C header files. # It works by a dummy program through the C pre-processor, and then # using sed to search for typedefs in the output. cat >st-dummy.c <<!EOF! #include <sys/types.h> #include <stddef.h> #include <stdarg.h> #include <stdio.h> #include <time.h> #include <signal.h> #ifdef size_t typedef size_t Xsize_t; #elif defined(__SIZE_TYPE__) typedef __SIZE_TYPE__ Xsize_t; #endif #ifdef va_list typedef va_list XXXva_list; #endif !EOF! if ${CPP} st-dummy.c >TMP ; then true else echo "scan-types: could not invoke ${CPP} on st-dummy.c" 1>&2 ; exit 1 fi tr ' ' ' ' <TMP >st-dummy.out for TYPE in dev_t clock_t fpos_t gid_t ino_t mode_t nlink_t off_t pid_t size_t ssize_t time_t uid_t va_list int32_t uint_32_t ; do IMPORTED=`eval 'echo $'"$TYPE"` if [ -n "${IMPORTED}" ] ; then eval "$TYPE='$IMPORTED" else # Search st-dummy.out for a typedef for $TYPE, and write it out # to TMP in #define syntax. rm -f TMP ${SED} -n -e "s|.*typedef *\(.*\) X*$TYPE *;.*|\1|w TMP" <st-dummy.out>/dev/null # Now select the first definition. if [ -s TMP ]; then # VALUE is now the typedef'd definition of $TYPE. eval "VALUE='`${SED} -e 's| *$||' -e '2,$d' <TMP`'" # Unless VALUE contains a blank, look for a typedef for it # in turn (this could be a loop, but that would be over-kill). # Ensure $VALUE is double quoted to protect cases where it # contains an asterisk and would cause filename expansion. # E.g. when va_list is "char *". if echo "$VALUE" | grep " " >/dev/null ; then true else rm -f TMP ${SED} -n -e "s|.*typedef[ ][ ]*\(.*[^a-zA-Z0-9_]\)${VALUE}[ ]*;.*|\1|w TMP" <st-dummy.out>/dev/null if [ -s TMP ]; then eval "VALUE='`${SED} -e '2,$d' -e 's|[ ]*$||' <TMP`'" fi fi eval "$TYPE='$VALUE'" fi fi done cat <<!EOF! #define ${macro_prefix}clock_t ${clock_t-int /* default */} #define ${macro_prefix}dev_t ${dev_t-int /* default */} #define ${macro_prefix}fpos_t ${fpos_t-long /* default */} #define ${macro_prefix}gid_t ${gid_t-int /* default */} #define ${macro_prefix}ino_t ${ino_t-int /* default */} #define ${macro_prefix}mode_t ${mode_t-int /* default */} #define ${macro_prefix}nlink_t ${nlink_t-int /* default */} #define ${macro_prefix}off_t ${off_t-long /* default */} #define ${macro_prefix}pid_t ${pid_t-int /* default */} #define ${macro_prefix}ptrdiff_t __PTRDIFF_TYPE__ #define ${macro_prefix}size_t __SIZE_TYPE__ #define ${macro_prefix}time_t ${time_t-int /* default */} #define ${macro_prefix}uid_t ${uid_t-int /* default */} #define ${macro_prefix}wchar_t __WCHAR_TYPE__ #define ${macro_prefix}int32_t ${int32_t-int /* default */} #define ${macro_prefix}uint32_t ${uint32_t-unsigned int /* default */} !EOF! # (wait_arg_t*) should be (int*), according to Posix, but # BSD traditionally used (union wait*). Use (void*) to allow either usage. echo "#define ${macro_prefix}wait_arg_t void" # ssize_t is the signed version of size_t if [ -n "${ssize_t}" ] ; then echo "#define ${macro_prefix}ssize_t ${ssize_t}" elif [ -z "${size_t}" ] ; then echo "#define ${macro_prefix}ssize_t long" else # Remove "unsigned" from ${size_t} to get ${ssize_t}. tmp="`echo ${size_t} | ${SED} -e 's|unsigned||g' -e 's| | |g'`" if [ -z "$tmp" ] ; then tmp=int else # check $tmp doesn't conflict with <unistd.h> echo "#include <unistd.h> extern $tmp read();" >st-dummy.c ${CC} -c st-dummy.c >/dev/null 2>&1 || tmp=int fi echo "#define ${macro_prefix}ssize_t $tmp /* default */" fi # va_list can cause problems (e.g. some systems have va_list as a struct). # Check to see if ${va_list-char*} really is compatible with stdarg.h. cat >st-dummy.c <<!EOF! #define X_va_list ${va_list-char* /* default */} extern long foo(X_va_list ap); /* Check that X_va_list compiles on its own */ #include <stdarg.h> long foo(X_va_list ap) { return va_arg(ap, long); } long bar(int i, ...) { va_list ap; long j; va_start(ap, i); j = foo(ap); va_end(ap); return j; } !EOF! if ${CC} -c st-dummy.c >/dev/null 2>&1 ; then # Ok: We have something that works. echo "#define ${macro_prefix}va_list ${va_list-char* /* default */}" else # No, it breaks. Indicate that <stdarg.h> must be included. echo "#define ${macro_prefix}NEED_STDARG_H #define ${macro_prefix}va_list va_list" fi # stuff needed for curses.h # This isn't correct for SVR4 (for example). However, we only # use this when adding a missing prototype, so it shouldn't matter. echo "#define chtype int" # sys-protos.h uses non-standard names (due to the CHTYPE argument problem). echo "#define box32 box" echo "#define initscr32 initscr" echo "#define w32addch waddch" echo "#define w32insch winsch" rm -f st-dummy.c st-dummy.o TMP st-dummy.out
Go to most recent revision | Compare with Previous | Blame | View Log